Hibernate UserType implementation for arbitrary objects that get serialized to BLOBs.
Retrieves the LobHandler to use from LocalSessionFactoryBean at config time.

Can also be defined in generic Hibernate mappings, as DefaultLobCreator will
work with most JDBC-compliant database drivers. In this case, the field type
does not have to be BLOB: For databases like MySQL and MS SQL Server, any
large enough binary type will work.